<template>
  <div>
    <Card>
      <div class="drag-box-card">

        <!-- 切记设置list1和list2属性时，一定要添加.sync修饰符 -->
        <drag-list :list1.sync="list1" :list2.sync="list2" :dropConClass="dropConClass" @on-change="handleChange">
          <h3 slot="left-title">待办事项</h3>
          <Card class="drag-item" slot="left" slot-scope="left">{{ left.itemLeft.name }}</Card>
          <h3 slot="right-title">完成事项</h3>
          <Card class="drag-item" slot="right" slot-scope="right">{{ right.itemRight.name }}</Card>
        </drag-list>

      </div>
      <div class="handle-log-box">
        <h3>操作记录</h3>
        <div class="handle-inner-box">
          <p v-for="(item, index) in handleList" :key="`handle_item_${index}`">{{ item }}</p>
        </div>
      </div>
      <div class="res-show-box">
        <pre>{{ list1 }}</pre>
      </div>
      <div class="res-show-box">
        <pre>{{ list2 }}</pre>
      </div>
    </Card>
  </div>
</template>
<script>
  import DragList from '_c/drag-list'
  import { getDragList } from '@/api/data'

  export default {
    name: 'drag_list_page',
    components: {
      DragList
    },
    data () {
      return {
        list1: [],
        list2: [],
        dropConClass: {
          left: ['drop-box', 'left-drop-box'],
          right: ['drop-box', 'right-drop-box']
        },
        handleList: []
      }
    },
    methods: {
      handleChange ({ src, target, oldIndex, newIndex }) {
        this.handleList.push(`${src} => ${target}, ${oldIndex} => ${newIndex}`)
      }
    },
    mounted () {
      getDragList().then(res => {
        this.list1 = res.data
        this.list2 = [res.data[0]]
      })
    }
  }
</script>
<style lang="less">
  .drag-box-card {
    display: inline-block;
    width: 600px;
    height: 560px;
    .drag-item {
      margin: 10px;
    }
    h3 {
      padding: 10px 15px;
    }
    .drop-box {
      border: 1px solid #eeeeee;
      height: 455px;
      border-radius: 5px;
    }
    .left-drop-box {
      margin-right: 10px;
    }
    .right-drop-box {
      //
    }
  }

  .handle-log-box {
    display: inline-block;
    margin-left: 20px;
    border: 1px solid #eeeeee;
    vertical-align: top;
    width: 200px;
    height: 500px;
    h3 {
      padding: 10px 14px;
    }
    .handle-inner-box {
      height: ~"calc(100% - 44px)";
      overflow: auto;
      p {
        padding: 14px 0;
        margin: 0 14px;
        border-bottom: 1px dashed #eeeeee;
      }
    }
  }

  .res-show-box {
    display: inline-block;
    margin-left: 20px;
    border: 1px solid #eeeeee;
    vertical-align: top;
    width: 350px;
    height: 570px;
  }
</style>
